Class 7 Exam > Class 7 Videos > Social Studies (SST) Class 7 > Inside Our Earth (Overview)
Inside Our Earth (Overview) Video Lecture | Social Studies (SST) Class 7
|
66 videos|336 docs|46 tests
|
FAQs on Inside Our Earth (Overview) Video Lecture - Social Studies (SST) Class 7
| 1. What is the composition of Earth's interior? |  |
Ans. Earth's interior is composed of several layers. The outermost layer is the crust, which is made up of solid rocks and minerals. Beneath the crust is the mantle, which is mostly solid but has some portions that are semi-fluid. The innermost layer is the core, which is primarily made of iron and nickel.
| 2. How do scientists study the Earth's interior? | |
Ans. Scientists study the Earth's interior using various methods. One common method is seismology, which involves analyzing the seismic waves produced by earthquakes. By studying the behavior of these waves as they pass through different layers of the Earth, scientists can infer information about its composition and structure. Other methods include analyzing rock samples from deep drilling and studying volcanic eruptions.
| 3. What is the role of convection currents in Earth's interior? | |
Ans. Convection currents play a crucial role in Earth's interior. In the mantle, heat from the Earth's core causes the rock to become less dense and rise towards the surface. As it cools, it becomes denser and sinks back down. This continuous movement of rock creates convection currents, which transfer heat in the mantle and help drive plate tectonics, leading to the movement of Earth's lithospheric plates.
| 4. How does the Earth's interior contribute to the formation of volcanoes and earthquakes? | |
Ans. The Earth's interior plays a significant role in the formation of volcanoes and earthquakes. Volcanoes are formed when molten rock, called magma, rises to the surface through cracks in the Earth's crust. This magma is generated by the melting of rocks in the mantle. Earthquakes occur when there is a sudden release of energy in the Earth's crust, which is often caused by the movement of tectonic plates along faults. The movement of these plates is driven by the convection currents in the Earth's interior.
| 5. How does the Earth's interior affect the magnetic field? | |
Ans. The Earth's interior, specifically the outer core, is responsible for generating the planet's magnetic field. The outer core is made up of molten iron and nickel, which are in constant motion due to the convection currents. This motion generates electric currents, which in turn create a magnetic field. This magnetic field extends around the Earth and protects it from harmful solar radiation, and also plays a crucial role in navigation and migration of certain animals.
Related Exams
About this Video
|
7.8K Views |
|
4.91/5 Rating |
|
Nov 16, 2024 Last updated |
Video Description: Inside Our Earth (Overview) for Class 7 2024 is part of Social Studies (SST) Class 7 preparation.
The notes and questions for Inside Our Earth (Overview) have been prepared according to the Class 7 exam syllabus.
Information about Inside Our Earth (Overview) covers all important topics for Class 7 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Inside Our Earth (Overview).
Introduction of Inside Our Earth (Overview) in English is available as part of our Social Studies (SST) Class 7 for Class 7 & Inside Our Earth (Overview) in
Hindi for Social Studies (SST) Class 7 course. Download more important topics related with notes, lectures and mock test series for
Class 7 Exam by signing up for free.
Description
Video Lecture & Questions for Inside Our Earth (Overview) Video Lecture | Social Studies (SST) Class 7 - Class 7 full syllabus preparation | Free video for Class 7 exam to prepare for Social Studies (SST) Class 7.
Information about Inside Our Earth (Overview)
Here you can find the meaning of Inside Our Earth (Overview) defined & explained in the simplest way possible.
Besides explaining types of Inside Our Earth (Overview) theory, EduRev gives you an ample number of questions to practice Inside Our Earth (Overview) tests,
examples and also practice Class 7 tests.
|
66 videos|336 docs|46 tests
|
|
Explore Courses for Class 7 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Exam
,video lectures
,practice quizzes
,study material
,shortcuts and tricks
,Important questions
,Inside Our Earth (Overview) Video Lecture | Social Studies (SST) Class 7
,Objective type Questions
,Inside Our Earth (Overview) Video Lecture | Social Studies (SST) Class 7
,Extra Questions
,Free
,ppt
,Inside Our Earth (Overview) Video Lecture | Social Studies (SST) Class 7
,Summary
,Sample Paper
,Previous Year Questions with Solutions
,past year papers
,Semester Notes
,mock tests for examination
,MCQs
,Viva Questions
;
Study Inside Our Earth (Overview) on the App
Students of Class 7 can study Inside Our Earth (Overview) alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Inside Our Earth (Overview),
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Inside Our Earth (Overview) is prepared as per the latest Class 7 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up
within 7 days!
within 7 days!
Takes less than 10 seconds to signup